Solubility Products of VS and NbS in Iron Alloys
Solubility Products of VS and NbS in Iron Alloys
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DOI：
10.2355/isijinternational.49.942
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发表时间：
2009-01-01
影响因子：
1.8
通讯作者：
Ishida, Kiyohito
中科院分区：
文献类型：
--
作者：
Oikawa, Katsunari;Sasaki, Tomoyuki;Ishida, Kiyohito
Solubility of sulfur in Fe-V and Fe-Nb alloys was experimentally determined using a diffusion couple technique. Solubility product of VS and NbS in ferrite (alpha) and austenite (gamma) phases were determined as log(mass%V)(mass%S)(alpha)=4.76-10100/T, log(mass%V)(mass%S)(gamma)=4.90-11000/T and log(mass%Nb)(mass%S)(gamma)=4.70-10500/T in the temperature range from 1 523 to 1 573 K. A thermodynamic analysis was also carried out to evaluate the formation energy of VS and NbS. The estimated formation energy of VS and NbS are Delta G(VS)(sulfide)= -263 100+61.OT (J/mol) and Delta G(NbS)(sulfide)= -260 800+68.4T (J/mol), respectively.
